For a fun London experience, check out the late night adult-only openings of the London Science Museum on the last Wednesday of every month. With 'no kids between you and the big red button' you can refresh forgotten science knowledge by checking out the rocket show (where the presenter proves he can do adult as well as childish humour), doing a spot of speed-dating, and contemplating the properties of sound while boogieing away at the silent disco. Best of all, it's completely free.
www.sciencemuseum.org.uk/visitmuseum/events/events_for_adults/Lates.aspx
Exhibition Road, South Kensington, London SW7 2DD
+44(0)870 870 4868
Google map: bit.ly/AjDdSY